Comedy acting legend Danny DeVito surprised Directioners today when he revealed that he's involved with the filming of One Direction's 'Steal My Girl' music video.

It wasn't immediately clear if he is the sole director on the video, or perhaps acting in it as well, but his behind-the-scenes tweets were enough to get Twitter excited about the revelation.

In the first photo above, DeVito appears to be meeting with Harry, Zayn, Louis, Liam and Niall and giving direction as well.

The official One Direction Twitter account also shows a photo of DeVito working with one of the camera operators.

DeVito also shared two behind-the-scenes shots of his own on his WhoSay account, including a photo of the boys taking a break together, as well as one of the guys posing with a monkey and a "trollfoot" (a long-running Twitter gag DeVito has been making about his foot).

We can't wait to see what the boys of 1D and DeVito have in store for us!